Thomas j



(No Model.) 2 Sheets-Sheet 1 T. J, OWENS.

STEAM PUMP.

Patented June 23 lln..

AN DREW E GRAHAM. PHDTDIJTHG.WASHINGTDM.D.C

NiTEDS STATES PATENT Ormes.

THOMAS J. OWENS, OF BEDFORD, INDIANA, ASSIGNOR OF ONE-HALF TO JAMESOATI-IER, OF SAME PLACE.

STEAM- srEcIFIcArroN forming part of` nea-.ers Patent No. 5e2,554,datedJune 23, 189e.

Application filed March 215, 1896.

To all whom t may concern:

Be it known that I, THOMAS J. OWENS, a citizen of the United States,residing atBedford, in the county of Lawrenceand State of Indiana, haveinvented a new and useful Steam -`Pump, of which the following is aspecification. My invention relates to steam-pumps, and particularly tohot-water feeders for boilers, and the object in View is to providemeans for actuating delivery-valves toav'oid resistance to the passageof water to the boiler', to provide means `for preventing the eXpansionof the valves from causing inoperativeness thereof, whereby water at anytemperature may be pumped Without detracting from the efficiency of theapparatus, and, furthermore, to provide such a construction andarrangement of parts as to avoid delay in admitting water to thewater-cylinder, whereby the space in rear of the piston is fullyoccupied by water, and hence the jar or hammer due to a partial vacuumwhen the direction of movement of the piston is reversed is avoided.

Further objects and advantages of this invention will appear in thefollowing description, and the novel features thereof will beparticularly pointed out in the appended claims.

In the drawings, Figure 1 is aside view of a pump constructed inaccordance with my invention, the valve-chest being shown in section andaportion of the steam-cylinder being broken away to show the tappets.Fig. 2 is a partial section of the water cylinder. Fig. 3 is ahorizontal section of the main and piston valve casings and a portionfbf-` the steam-cylinder.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

1 designates a steam-cylinder in which is arranged a piston 2, connectedto a piston-rod 3, and 4 represents a water-cylinder inclosing apump-piston 5, which is connected to said piston-rod to receive motionfrom the `piston operating in the steam-cylinder. In

serai No. 584,808. (no man.)

connection with the water cylinder is arranged a feed-chamberG,communicatin g with a feed-pipe 7, and connected with the feedchamberis a compressor 8. Communication is established between thewater-cylinder and the feed-chamber by means of ports 9 and 10,controlled by check-valves 11,. and said valves are mounted upon guides12 and are normallyV of delivery-valves 23, having stems 24 operating inupper and lower guides 25 and 26, arranged, respectively, above andbelow the plane of the valve-seat.

Arranged in operative relation with the lower extremitiesof thevalve-stems 24 is a rocking lever 27, fulcrumed, as at 28, in the casing14 below the plane of the valve-seat, with its rounded extremities 29 inposition to engage the lower extremities of the stems 24 to unseat thevalves. This lever is provided at its center with a slotted arm 30, withwhich kengage collars 3l on a valve-stem 32, said valve-stem extendingthrough a stuffing-box 33 in the end of the casing 14 and operating atits extremity in aV guide-eye 34. The inlet of steam to thesteam-cylinder 1 is controlled by a main slide-valve 35, operating in avalve-casing 36, and controlling the inlet-ports 37 and 38 and theexhaust-port 39, a steam-inlet pipe 40 being arranged in communicationwith the casing; and this slidevalve is operated by means of anactuatingpiston 41 operating in a cylinder `42 and provided at itscenter with a seat 43 to receive aprojection 44 on the main slide-valve35. 4This actuating-piston 41 is secured to the eX- tremity of thedelivery-valve stem 32, and motion is communicated to theactuating-piston by means of an auxiliary slide-valve 45, operating inan auxiliary slide-valve casing 46 upon a seat 47, in which are formedinletports 48 and 49 and exhaust-ports 50, said inlet-portscommunicating, respectively, with opposite ends of the cylinder 42, andthe exhaust-ports being united, as at 5l, to form a suitable outlet.Motion is communicated to this auxiliary or controlling valve by meansof rocking levers 52, connected to opposite extremities of the auxiliaryvalve-stem 53, and also connected to reciprocatory tappets 54 and 55,operating through stuffing-boxes 56 with their inner extremities in thepath of the steam-cylinder piston2, whereby the tappets are actuated toreverse the position of the auxiliary valve at the limits of the strokesof the main piston. The exhaust-port 39 in the main valve-seatcommunicates with an exhaust-pipe 57.

This being the construction of the improved pump,the operation thereof,brieiiy described,

is as follows: In Fig. l the steam-cylinder piston is shown at the limitof its stroke to the right, the tappet 55 having been forced outward toreverse the auxiliary valve 45. The port 49 in the valve-seat 47 isthereby opened to admit steam to the right-hand end of theoperating-piston cylinder 42, and the movement of the piston 4l to theleft causes a corresponding` movement of the main valve 35-'to open theinlet-port 37, whereby steam is admitted at the right of the mainsteam-cylinder piston 2. The movement of the operatingpiston 4l to theleft has also opened the delivery-valve controlling the port 18, andhence water admitted to the valve-casing 14 through the supply-pipe l5is allowed to pass freely through the port 22 to the interior of thewater-cylinder in rear of the piston therein. The pump, as abovedescribed, is not designed to elevate water, the latter being suppliedfrom an elevated tank or receptacle in connection with the heater, saidtank and heater not being shown in the drawings, and hence when thevalve controlling the delivery-port is opened water is allowed to iiowfreely to the water-cylinder in rear of the piston to entirely fill thespace and permit the piston to advance without causing a partial vacuum.This forward movement of the piston in the water-cylinder, due to theadmission of steam through the inlet-port 37 of the steam-cylinder,causes upward pressure upon the checkvalve controlling the port 9 in thewatercylinder, and hence the water is allowed to pass out from in frontof the water-cylinder piston for discharge through the feed-pipe 7 tothe boiler. (Not shown.) Thus it will be seen that the delivery-valvesare opened simultaneously with or slightly before steam is admitted tothe steam-cylinder to actuate the main piston, and hence no lost motionor vacuum is caused in rear of the Water-cylinder piston, andconsequently upon the commencement of the return stroke of the pistonthere is no jar or hammer due to a vacancy in advance of the piston.

Various changes in the form, proportion, and the minor details ofconstruction maybe resorted to without departing from the spirit orsacrificing any of the advantages of this invention.

Having described my invention, what I claim isl. The combination withsteam and water cylinders having connected pistons, deliveryvalvescontrolling the inlet-ports of the Water-cylinder, and a mainslide-valve controlling the inlet-ports of the steam-cylinder, of anoperating-piston fixed to the main valve and operatively connected withthe deliveryvalves, an auxiliary or reversing valve controlling ports incommunication with the cylinder of the operating-piston to move thelatter alternately in opposite directions, and shifting devicesincluding tappets actuated by the steam-cylinder piston for operatingsaid auxiliary or reversing valve, substantially as specified.

2. The combination with steam and water cylinders having connectedpistons, deliveryvalves controlling the inlet-ports of theWater-cylinder and a main valve controlling the inlet-ports of thesteam-cylinder, of an operating-piston attached to the stem of thedelivery-valves and to the main valve, an auxiliary or reversing valvecontrolling ports in communication with the casing of theoperating-piston, tappets arranged at the opposite extremities of thesteam-cylinder in the path of the piston operating therein, andconnections between said tappets and the auxiliary or reversing valve,substantially as specified.

3. The combination with a feed water pump-cylinder, and a pistonoperating therein, of spring-closed delivery-valves arranged inoperative relation with ports communicating, respectively, with oppositeends of the cylinder, a rocking lever disposed at its extremities inoperative relation with the delivery-valves, and a stem connected to therocking lever and adapted to be reciprocated at the limits of thestrokes of the piston to reverse the positions of the delivery-valvesprior to the commencement of the succeeding stroke of the piston,substantially as speciiied.

4. The combination with coaxial steam and water cylinders having pistonsconnected by a common piston-rod, of spring-closed delivery-valvescontrolling the inlet-ports of the Water-cylinder, a rocking leverarranged at its extremities in operative relation with thedelivery-valves, a main valve controlling the inlet-ports of thesteam-cylinder, an operating-piston attached to the main valve, a rod 32connected to said operating-piston and having collars arranged uponopposite sides of an arm on the rocking lever, an auxiliary IOO IIO

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562, 554 Y l Si slide-valve controlling ports in communication with theeasing ofthe operatingepiston, tappets arranged at opposite extremitiesof thesteam-eylinder in the path of and in alinement With the pistonoperating therein7 and levers connecting said tappets respectively withopposite ends of the stem of the auxiliary valve, substantially asspecified.

In testimony that I claim the foregoing as Io my own I have heretoaffixed. my signature in the presence of two Witnesses.

THOMAS J. OWENS.

Vitnesses: JAMEs CATHER,

JAMES E, BORUFF.

